The following table shows the speed S of a car, in miles per hour, as a function of the time t, in seconds, since observation of the car began.
t 15 30 45 60 S 60.00 65.00 65.00 70.00?
?
A: Find the equation of the regression line.B: Plot the data along with the regression line.C: Explain in practical terms the meaning of the slope of the regression line.D: How fast would you expect this car to be traveling after 71 seconds?
What will be an ideal response?
A: 
?
B:
?
?
C: The speed increases by about 0.20 mile per hour for each second that passes, so the car is accelerating at a rate of 0.20 mile per hour per second.
?
D: About 71.70 miles per hour
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